import pytest

from helpers.cluster import ClickHouseCluster

cluster = ClickHouseCluster(__file__)
node = cluster.add_instance('node', main_configs=["configs/config.xml"], with_zookeeper=True)


@pytest.fixture(scope="module")
def started_cluster():
    try:
        cluster.start()
        yield cluster
    finally:
        cluster.shutdown()

def create_force_drop_flag(node):
    force_drop_flag_path = "/var/lib/clickhouse/flags/force_drop_table"
    node.exec_in_container(["bash", "-c", "touch {} && chmod a=rw {}".format(force_drop_flag_path, force_drop_flag_path)], user="root")

@pytest.mark.parametrize("engine", ['Ordinary', 'Atomic'])
def test_drop_materialized_view(started_cluster, engine):
    node.query("CREATE DATABASE d ENGINE={}".format(engine))
    node.query("CREATE TABLE d.rmt (n UInt64) ENGINE=ReplicatedMergeTree('/test/rmt', 'r1') ORDER BY n PARTITION BY n % 2")
    node.query("CREATE MATERIALIZED VIEW d.mv (n UInt64, s String) ENGINE=MergeTree ORDER BY n PARTITION BY n % 2 AS SELECT n, toString(n) AS s FROM d.rmt")
    node.query("INSERT INTO d.rmt VALUES (1), (2)")
    assert "is greater than max" in node.query_and_get_error("DROP TABLE d.rmt")
    assert "is greater than max" in node.query_and_get_error("DROP TABLE d.mv")
    assert "is greater than max" in node.query_and_get_error("TRUNCATE TABLE d.rmt")
    assert "is greater than max" in node.query_and_get_error("TRUNCATE TABLE d.mv")
    assert "is greater than max" in node.query_and_get_error("ALTER TABLE d.rmt DROP PARTITION '0'")
    assert node.query("SELECT * FROM d.rmt ORDER BY n") == "1\n2\n"
    assert node.query("SELECT * FROM d.mv ORDER BY n") == "1\t1\n2\t2\n"

    create_force_drop_flag(node)
    node.query("ALTER TABLE d.rmt DROP PARTITION '0'")
    assert node.query("SELECT * FROM d.rmt ORDER BY n") == "1\n"
    assert "is greater than max" in node.query_and_get_error("ALTER TABLE d.mv DROP PARTITION '0'")
    create_force_drop_flag(node)
    node.query("ALTER TABLE d.mv DROP PARTITION '0'")
    assert node.query("SELECT * FROM d.mv ORDER BY n") == "1\t1\n"
    assert "is greater than max" in node.query_and_get_error("DROP TABLE d.rmt SYNC")
    create_force_drop_flag(node)
    node.query("DROP TABLE d.rmt SYNC")
    assert "is greater than max" in node.query_and_get_error("DROP TABLE d.mv SYNC")
    create_force_drop_flag(node)
    node.query("DROP TABLE d.mv SYNC")
    node.query("DROP DATABASE d")